- 根目录:
- drivers
- media
- video
- hdpvr
- hdpvr-video.c
/*
* Hauppauge HD PVR USB driver - video 4 linux 2 interface
*
* Copyright (C) 2008 Janne Grunau (j@jannau.net)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, version 2.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/mutex.h>
#include <linux/version.h>
#include <linux/workqueue.h>
#include <linux/videodev2.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include "hdpvr.h"
#define BULK_URB_TIMEOUT 90 /* 0.09 seconds */
#define print_buffer_status() { \
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, \
"%s:%d buffer stat: %d free, %d proc\n", \
__func__, __LINE__, \
list_size(&dev->free_buff_list), \
list_size(&dev->rec_buff_list)); }
struct hdpvr_fh {
struct hdpvr_device *dev;
};
static uint list_size(struct list_head *list)
{
struct list_head *tmp;
uint count = 0;
list_for_each(tmp, list) {
count++;
}
return count;
}
/*=========================================================================*/
/* urb callback */
static void hdpvr_read_bulk_callback(struct urb *urb)
{
struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
struct hdpvr_device *dev = buf->dev;
/* marking buffer as received and wake waiting */
buf->status = BUFSTAT_READY;
wake_up_interruptible(&dev->wait_data);
}
/*=========================================================================*/
/* bufffer bits */
/* function expects dev->io_mutex to be hold by caller */
int hdpvr_cancel_queue(struct hdpvr_device *dev)
{
struct hdpvr_buffer *buf;
list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
usb_kill_urb(buf->urb);
buf->status = BUFSTAT_AVAILABLE;
}
list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
return 0;
}
static int hdpvr_free_queue(struct list_head *q)
{
struct list_head *tmp;
struct list_head *p;
struct hdpvr_buffer *buf;
struct urb *urb;
for (p = q->next; p != q;) {
buf = list_entry(p, struct hdpvr_buffer, buff_list);
urb = buf->urb;
usb_free_coherent(urb->dev, urb->transfer_buffer_length,
urb->transfer_buffer, urb->transfer_dma);
usb_free_urb(urb);
tmp = p->next;
list_del(p);
kfree(buf);
p = tmp;
}
return 0;
}
/* function expects dev->io_mutex to be hold by caller */
int hdpvr_free_buffers(struct hdpvr_device *dev)
{
hdpvr_cancel_queue(dev);
hdpvr_free_queue(&dev->free_buff_list);
hdpvr_free_queue(&dev->rec_buff_list);
return 0;
}
/* function expects dev->io_mutex to be hold by caller */
int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
{
uint i;
int retval = -ENOMEM;
u8 *mem;
struct hdpvr_buffer *buf;
struct urb *urb;
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"allocating %u buffers\n", count);
for (i = 0; i < count; i++) {
buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL);
if (!buf) {
v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
goto exit;
}
buf->dev = dev;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n");
goto exit_urb;
}
buf->urb = urb;
mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
&urb->transfer_dma);
if (!mem) {
v4l2_err(&dev->v4l2_dev,
"cannot allocate usb transfer buffer\n");
goto exit_urb_buffer;
}
usb_fill_bulk_urb(buf->urb, dev->udev,
usb_rcvbulkpipe(dev->udev,
dev->bulk_in_endpointAddr),
mem, dev->bulk_in_size,
hdpvr_read_bulk_callback, buf);
buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
buf->status = BUFSTAT_AVAILABLE;
list_add_tail(&buf->buff_list, &dev->free_buff_list);
}
return 0;
exit_urb_buffer:
usb_free_urb(urb);
exit_urb:
kfree(buf);
exit:
hdpvr_free_buffers(dev);
return retval;
}
static int hdpvr_submit_buffers(struct hdpvr_device *dev)
{
struct hdpvr_buffer *buf;
struct urb *urb;
int ret = 0, err_count = 0;
mutex_lock(&dev->io_mutex);
while (dev->status == STATUS_STREAMING &&
!list_empty(&dev->free_buff_list)) {
buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
buff_list);
if (buf->status != BUFSTAT_AVAILABLE) {
v4l2_err(&dev->v4l2_dev,
"buffer not marked as available\n");
ret = -EFAULT;
goto err;
}
urb = buf->urb;
urb->status = 0;
urb->actual_length = 0;
ret = usb_submit_urb(urb, GFP_KERNEL);
if (ret) {
v4l2_err(&dev->v4l2_dev,
"usb_submit_urb in %s returned %d\n",
__func__, ret);
if (++err_count > 2)
break;
continue;
}
buf->status = BUFSTAT_INPROGRESS;
list_move_tail(&buf->buff_list, &dev->rec_buff_list);
}
err:
print_buffer_status();
mutex_unlock(&dev->io_mutex);
return ret;
}
static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
{
struct hdpvr_buffer *buf;
mutex_lock(&dev->io_mutex);
if (list_empty(&dev->rec_buff_list)) {
mutex_unlock(&dev->io_mutex);
return NULL;
}
buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
buff_list);
mutex_unlock(&dev->io_mutex);
return buf;
}
static void hdpvr_transmit_buffers(struct work_struct *work)
{
struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
worker);
while (dev->status == STATUS_STREAMING) {
if (hdpvr_submit_buffers(dev)) {
v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
goto error;
}
if (wait_event_interruptible(dev->wait_buffer,
!list_empty(&dev->free_buff_list) ||
dev->status != STATUS_STREAMING))
goto error;
}
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"transmit worker exited\n");
return;
error:
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"transmit buffers errored\n");
dev->status = STATUS_ERROR;
}
/* function expects dev->io_mutex to be hold by caller */
static int hdpvr_start_streaming(struct hdpvr_device *dev)
{
int ret;
struct hdpvr_video_info *vidinf;
if (dev->status == STATUS_STREAMING)
return 0;
else if (dev->status != STATUS_IDLE)
return -EAGAIN;
vidinf = get_video_info(dev);
if (vidinf) {
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"video signal: %dx%d@%dhz\n", vidinf->width,
vidinf->height, vidinf->fps);
kfree(vidinf);
/* start streaming 2 request */
ret = usb_control_msg(dev->udev,
usb_sndctrlpipe(dev->udev, 0),
0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"encoder start control request returned %d\n", ret);
hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
dev->status = STATUS_STREAMING;
INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
queue_work(dev->workqueue, &dev->worker);
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"streaming started\n");
return 0;
}
msleep(250);
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"no video signal at input %d\n", dev->options.video_input);
return -EAGAIN;
}
/* function expects dev->io_mutex to be hold by caller */
static int hdpvr_stop_streaming(struct hdpvr_device *dev)
{
int actual_length;
uint c = 0;
u8 *buf;
if (dev->status == STATUS_IDLE)
return 0;
else if (dev->status != STATUS_STREAMING)
return -EAGAIN;
buf = kmalloc(dev->bulk_in_size, GFP_KERNEL);
if (!buf)
v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer "
"for emptying the internal device buffer. "
"Next capture start will be slow\n");
dev->status = STATUS_SHUTTING_DOWN;
hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
mutex_unlock(&dev->io_mutex);
wake_up_interruptible(&dev->wait_buffer);
msleep(50);
flush_workqueue(dev->workqueue);
mutex_lock(&dev->io_mutex);
/* kill the still outstanding urbs */
hdpvr_cancel_queue(dev);
/* emptying the device buffer beforeshutting it down */
while (buf && ++c < 500 &&
!usb_bulk_msg(dev->udev,
usb_rcvbulkpipe(dev->udev,
dev->bulk_in_endpointAddr),
buf, dev->bulk_in_size, &actual_length,
BULK_URB_TIMEOUT)) {
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"%2d: got %d bytes\n", c, actual_length);
}
kfree(buf);
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"used %d urbs to empty device buffers\n", c-1);
msleep(10);
dev->status = STATUS_IDLE;
return 0;
}
/*=======================================================================*/
/*
* video 4 linux 2 file operations
*/
static int hdpvr_open(struct file *file)
{
struct hdpvr_device *dev;
struct hdpvr_fh *fh;
int retval = -ENOMEM;
dev = (struct hdpvr_device *)video_get_drvdata(video_devdata(file));
if (!dev) {
pr_err("open failing with with ENODEV\n");
retval = -ENODEV;
goto err;
}
fh = kzalloc(sizeof(struct hdpvr_fh), GFP_KERNEL);
if (!fh) {
v4l2_err(&dev->v4l2_dev, "Out of memory\n");
goto err;
}
/* lock the device to allow correctly handling errors
* in resumption */
mutex_lock(&dev->io_mutex);
dev->open_count++;
mutex_unlock(&dev->io_mutex);
fh->dev = dev;
/* save our object in the file's private structure */
file->private_data = fh;
retval = 0;
err:
return retval;
}
static int hdpvr_release(struct file *file)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
if (!dev)
return -ENODEV;
mutex_lock(&dev->io_mutex);
if (!(--dev->open_count) && dev->status == STATUS_STREAMING)
hdpvr_stop_streaming(dev);
mutex_unlock(&dev->io_mutex);
return 0;
}
/*
* hdpvr_v4l2_read()
* will allocate buffers when called for the first time
*/
static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
loff_t *pos)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
struct hdpvr_buffer *buf = NULL;
struct urb *urb;
unsigned int ret = 0;
int rem, cnt;
if (*pos)
return -ESPIPE;
if (!dev)
return -ENODEV;
mutex_lock(&dev->io_mutex);
if (dev->status == STATUS_IDLE) {
if (hdpvr_start_streaming(dev)) {
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"start_streaming failed\n");
ret = -EIO;
msleep(200);
dev->status = STATUS_IDLE;
mutex_unlock(&dev->io_mutex);
goto err;
}
print_buffer_status();
}
mutex_unlock(&dev->io_mutex);
/* wait for the first buffer */
if (!(file->f_flags & O_NONBLOCK)) {
if (wait_event_interruptible(dev->wait_data,
hdpvr_get_next_buffer(dev)))
return -ERESTARTSYS;
}
buf = hdpvr_get_next_buffer(dev);
while (count > 0 && buf) {
if (buf->status != BUFSTAT_READY &&
dev->status != STATUS_DISCONNECTED) {
/* return nonblocking */
if (file->f_flags & O_NONBLOCK) {
if (!ret)
ret = -EAGAIN;
goto err;
}
if (wait_event_interruptible(dev->wait_data,
buf->status == BUFSTAT_READY)) {
ret = -ERESTARTSYS;
goto err;
}
}
if (buf->status != BUFSTAT_READY)
break;
/* set remaining bytes to copy */
urb = buf->urb;
rem = urb->actual_length - buf->pos;
cnt = rem > count ? count : rem;
if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
cnt)) {
v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
if (!ret)
ret = -EFAULT;
goto err;
}
buf->pos += cnt;
count -= cnt;
buffer += cnt;
ret += cnt;
/* finished, take next buffer */
if (buf->pos == urb->actual_length) {
mutex_lock(&dev->io_mutex);
buf->pos = 0;
buf->status = BUFSTAT_AVAILABLE;
list_move_tail(&buf->buff_list, &dev->free_buff_list);
print_buffer_status();
mutex_unlock(&dev->io_mutex);
wake_up_interruptible(&dev->wait_buffer);
buf = hdpvr_get_next_buffer(dev);
}
}
err:
if (!ret && !buf)
ret = -EAGAIN;
return ret;
}
static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
{
struct hdpvr_buffer *buf = NULL;
struct hdpvr_fh *fh = filp->private_data;
struct hdpvr_device *dev = fh->dev;
unsigned int mask = 0;
mutex_lock(&dev->io_mutex);
if (!video_is_registered(dev->video_dev)) {
mutex_unlock(&dev->io_mutex);
return -EIO;
}
if (dev->status == STATUS_IDLE) {
if (hdpvr_start_streaming(dev)) {
v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
"start_streaming failed\n");
dev->status = STATUS_IDLE;
}
print_buffer_status();
}
mutex_unlock(&dev->io_mutex);
buf = hdpvr_get_next_buffer(dev);
/* only wait if no data is available */
if (!buf || buf->status != BUFSTAT_READY) {
poll_wait(filp, &dev->wait_data, wait);
buf = hdpvr_get_next_buffer(dev);
}
if (buf && buf->status == BUFSTAT_READY)
mask |= POLLIN | POLLRDNORM;
return mask;
}
static const struct v4l2_file_operations hdpvr_fops = {
.owner = THIS_MODULE,
.open = hdpvr_open,
.release = hdpvr_release,
.read = hdpvr_read,
.poll = hdpvr_poll,
.unlocked_ioctl = video_ioctl2,
};
/*=======================================================================*/
/*
* V4L2 ioctl handling
*/
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct hdpvr_device *dev = video_drvdata(file);
strcpy(cap->driver, "hdpvr");
strcpy(cap->card, "Hauppauge HD PVR");
usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
cap->version = HDPVR_VERSION;
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_AUDIO |
V4L2_CAP_READWRITE;
return 0;
}
static int vidioc_s_std(struct file *file, void *private_data,
v4l2_std_id *std)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
u8 std_type = 1;
if (*std & (V4L2_STD_NTSC | V4L2_STD_PAL_60))
std_type = 0;
return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
}
static const char *iname[] = {
[HDPVR_COMPONENT] = "Component",
[HDPVR_SVIDEO] = "S-Video",
[HDPVR_COMPOSITE] = "Composite",
};
static int vidioc_enum_input(struct file *file, void *priv,
struct v4l2_input *i)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
unsigned int n;
n = i->index;
if (n >= HDPVR_VIDEO_INPUTS)
return -EINVAL;
i->type = V4L2_INPUT_TYPE_CAMERA;
strncpy(i->name, iname[n], sizeof(i->name) - 1);
i->name[sizeof(i->name) - 1] = '\0';
i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
i->std = dev->video_dev->tvnorms;
return 0;
}
static int vidioc_s_input(struct file *file, void *private_data,
unsigned int index)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
int retval;
if (index >= HDPVR_VIDEO_INPUTS)
return -EINVAL;
if (dev->status != STATUS_IDLE)
return -EAGAIN;
retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
if (!retval)
dev->options.video_input = index;
return retval;
}
static int vidioc_g_input(struct file *file, void *private_data,
unsigned int *index)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
*index = dev->options.video_input;
return 0;
}
static const char *audio_iname[] = {
[HDPVR_RCA_FRONT] = "RCA front",
[HDPVR_RCA_BACK] = "RCA back",
[HDPVR_SPDIF] = "SPDIF",
};
static int vidioc_enumaudio(struct file *file, void *priv,
struct v4l2_audio *audio)
{
unsigned int n;
n = audio->index;
if (n >= HDPVR_AUDIO_INPUTS)
return -EINVAL;
audio->capability = V4L2_AUDCAP_STEREO;
strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1);
audio->name[sizeof(audio->name) - 1] = '\0';
return 0;
}
static int vidioc_s_audio(struct file *file, void *private_data,
struct v4l2_audio *audio)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
int retval;
if (audio->index >= HDPVR_AUDIO_INPUTS)
return -EINVAL;
if (dev->status != STATUS_IDLE)
return -EAGAIN;
retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
if (!retval)
dev->options.audio_input = audio->index;
return retval;
}
static int vidioc_g_audio(struct file *file, void *private_data,
struct v4l2_audio *audio)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
audio->index = dev->options.audio_input;
audio->capability = V4L2_AUDCAP_STEREO;
strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
audio->name[sizeof(audio->name) - 1] = '\0';
return 0;
}
static const s32 supported_v4l2_ctrls[] = {
V4L2_CID_BRIGHTNESS,
V4L2_CID_CONTRAST,
V4L2_CID_SATURATION,
V4L2_CID_HUE,
V4L2_CID_SHARPNESS,
V4L2_CID_MPEG_AUDIO_ENCODING,
V4L2_CID_MPEG_VIDEO_ENCODING,
V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
V4L2_CID_MPEG_VIDEO_BITRATE,
V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
};
static int fill_queryctrl(struct hdpvr_options *opt, struct v4l2_queryctrl *qc,
int ac3)
{
int err;
switch (qc->id) {
case V4L2_CID_BRIGHTNESS:
return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x86);
case V4L2_CID_CONTRAST:
return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
case V4L2_CID_SATURATION:
return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
case V4L2_CID_HUE:
return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
case V4L2_CID_SHARPNESS:
return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
case V4L2_CID_MPEG_AUDIO_ENCODING:
return v4l2_ctrl_query_fill(
qc, V4L2_MPEG_AUDIO_ENCODING_AAC,
ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3
: V4L2_MPEG_AUDIO_ENCODING_AAC,
1, V4L2_MPEG_AUDIO_ENCODING_AAC);
case V4L2_CID_MPEG_VIDEO_ENCODING:
return v4l2_ctrl_query_fill(
qc, V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC,
V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 1,
V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
/* case V4L2_CID_MPEG_VIDEO_? maybe keyframe interval: */
/* return v4l2_ctrl_query_fill(qc, 0, 128, 128, 0); */
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
return v4l2_ctrl_query_fill(
qc, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1,
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
case V4L2_CID_MPEG_VIDEO_BITRATE:
return v4l2_ctrl_query_fill(qc, 1000000, 13500000, 100000,
6500000);
case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
err = v4l2_ctrl_query_fill(qc, 1100000, 20200000, 100000,
9000000);
if (!err && opt->bitrate_mode == HDPVR_CONSTANT)
qc->flags |= V4L2_CTRL_FLAG_INACTIVE;
return err;
default:
return -EINVAL;
}
}
static int vidioc_queryctrl(struct file *file, void *private_data,
struct v4l2_queryctrl *qc)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
int i, next;
u32 id = qc->id;
memset(qc, 0, sizeof(*qc));
next = !!(id & V4L2_CTRL_FLAG_NEXT_CTRL);
qc->id = id & ~V4L2_CTRL_FLAG_NEXT_CTRL;
for (i = 0; i < ARRAY_SIZE(supported_v4l2_ctrls); i++) {
if (next) {
if (qc->id < supported_v4l2_ctrls[i])
qc->id = supported_v4l2_ctrls[i];
else
continue;
}
if (qc->id == supported_v4l2_ctrls[i])
return fill_queryctrl(&dev->options, qc,
dev->flags & HDPVR_FLAG_AC3_CAP);
if (qc->id < supported_v4l2_ctrls[i])
break;
}
return -EINVAL;
}
static int vidioc_g_ctrl(struct file *file, void *private_data,
struct v4l2_control *ctrl)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ctrl->value = dev->options.brightness;
break;
case V4L2_CID_CONTRAST:
ctrl->value = dev->options.contrast;
break;
case V4L2_CID_SATURATION:
ctrl->value = dev->options.saturation;
break;
case V4L2_CID_HUE:
ctrl->value = dev->options.hue;
break;
case V4L2_CID_SHARPNESS:
ctrl->value = dev->options.sharpness;
break;
default:
return -EINVAL;
}
return 0;
}
static int vidioc_s_ctrl(struct file *file, void *private_data,
struct v4l2_control *ctrl)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
int retval;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
retval = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->value);
if (!retval)
dev->options.brightness = ctrl->value;
break;
case V4L2_CID_CONTRAST:
retval = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->value);
if (!retval)
dev->options.contrast = ctrl->value;
break;
case V4L2_CID_SATURATION:
retval = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->value);
if (!retval)
dev->options.saturation = ctrl->value;
break;
case V4L2_CID_HUE:
retval = hdpvr_config_call(dev, CTRL_HUE, ctrl->value);
if (!retval)
dev->options.hue = ctrl->value;
break;
case V4L2_CID_SHARPNESS:
retval = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->value);
if (!retval)
dev->options.sharpness = ctrl->value;
break;
default:
return -EINVAL;
}
return retval;
}
static int hdpvr_get_ctrl(struct hdpvr_options *opt,
struct v4l2_ext_control *ctrl)
{
switch (ctrl->id) {
case V4L2_CID_MPEG_AUDIO_ENCODING:
ctrl->value = opt->audio_codec;
break;
case V4L2_CID_MPEG_VIDEO_ENCODING:
ctrl->value = V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC;
break;
/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
/* ctrl->value = (opt->gop_mode & 0x2) ? 0 : 128; */
/* break; */
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
ctrl->value = opt->bitrate_mode == HDPVR_CONSTANT
? V4L2_MPEG_VIDEO_BITRATE_MODE_CBR
: V4L2_MPEG_VIDEO_BITRATE_MODE_VBR;
break;
case V4L2_CID_MPEG_VIDEO_BITRATE:
ctrl->value = opt->bitrate * 100000;
break;
case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
ctrl->value = opt->peak_bitrate * 100000;
break;
case V4L2_CID_MPEG_STREAM_TYPE:
ctrl->value = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
break;
default:
return -EINVAL;
}
return 0;
}
static int vidioc_g_ext_ctrls(struct file *file, void *priv,
struct v4l2_ext_controls *ctrls)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
int i, err = 0;
if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
for (i = 0; i < ctrls->count; i++) {
struct v4l2_ext_control *ctrl = ctrls->controls + i;
err = hdpvr_get_ctrl(&dev->options, ctrl);
if (err) {
ctrls->error_idx = i;
break;
}
}
return err;
}
return -EINVAL;
}
static int hdpvr_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
{
int ret = -EINVAL;
switch (ctrl->id) {
case V4L2_CID_MPEG_AUDIO_ENCODING:
if (ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AAC ||
(ac3 && ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AC3))
ret = 0;
break;
case V4L2_CID_MPEG_VIDEO_ENCODING:
if (ctrl->value == V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC)
ret = 0;
break;
/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
/* if (ctrl->value == 0 || ctrl->value == 128) */
/* ret = 0; */
/* break; */
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR ||
ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR)
ret = 0;
break;
case V4L2_CID_MPEG_VIDEO_BITRATE:
{
uint bitrate = ctrl->value / 100000;
if (bitrate >= 10 && bitrate <= 135)
ret = 0;
break;
}
case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
{
uint peak_bitrate = ctrl->value / 100000;
if (peak_bitrate >= 10 && peak_bitrate <= 202)
ret = 0;
break;
}
case V4L2_CID_MPEG_STREAM_TYPE:
if (ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_TS)
ret = 0;
break;
default:
return -EINVAL;
}
return 0;
}
static int vidioc_try_ext_ctrls(struct file *file, void *priv,
struct v4l2_ext_controls *ctrls)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
int i, err = 0;
if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
for (i = 0; i < ctrls->count; i++) {
struct v4l2_ext_control *ctrl = ctrls->controls + i;
err = hdpvr_try_ctrl(ctrl,
dev->flags & HDPVR_FLAG_AC3_CAP);
if (err) {
ctrls->error_idx = i;
break;
}
}
return err;
}
return -EINVAL;
}
static int hdpvr_set_ctrl(struct hdpvr_device *dev,
struct v4l2_ext_control *ctrl)
{
struct hdpvr_options *opt = &dev->options;
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_MPEG_AUDIO_ENCODING:
if (dev->flags & HDPVR_FLAG_AC3_CAP) {
opt->audio_codec = ctrl->value;
ret = hdpvr_set_audio(dev, opt->audio_input,
opt->audio_codec);
}
break;
case V4L2_CID_MPEG_VIDEO_ENCODING:
break;
/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
/* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
/* opt->gop_mode |= 0x2; */
/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
/* opt->gop_mode); */
/* } */
/* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
/* opt->gop_mode &= ~0x2; */
/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
/* opt->gop_mode); */
/* } */
/* break; */
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR &&
opt->bitrate_mode != HDPVR_CONSTANT) {
opt->bitrate_mode = HDPVR_CONSTANT;
hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
opt->bitrate_mode);
}
if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
opt->bitrate_mode == HDPVR_CONSTANT) {
opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
opt->bitrate_mode);
}
break;
case V4L2_CID_MPEG_VIDEO_BITRATE: {
uint bitrate = ctrl->value / 100000;
opt->bitrate = bitrate;
if (bitrate >= opt->peak_bitrate)
opt->peak_bitrate = bitrate+1;
hdpvr_set_bitrate(dev);
break;
}
case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: {
uint peak_bitrate = ctrl->value / 100000;
if (opt->bitrate_mode == HDPVR_CONSTANT)
break;
if (opt->bitrate < peak_bitrate) {
opt->peak_bitrate = peak_bitrate;
hdpvr_set_bitrate(dev);
} else
ret = -EINVAL;
break;
}
case V4L2_CID_MPEG_STREAM_TYPE:
break;
default:
return -EINVAL;
}
return ret;
}
static int vidioc_s_ext_ctrls(struct file *file, void *priv,
struct v4l2_ext_controls *ctrls)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
int i, err = 0;
if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
for (i = 0; i < ctrls->count; i++) {
struct v4l2_ext_control *ctrl = ctrls->controls + i;
err = hdpvr_try_ctrl(ctrl,
dev->flags & HDPVR_FLAG_AC3_CAP);
if (err) {
ctrls->error_idx = i;
break;
}
err = hdpvr_set_ctrl(dev, ctrl);
if (err) {
ctrls->error_idx = i;
break;
}
}
return err;
}
return -EINVAL;
}
static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
struct v4l2_fmtdesc *f)
{
if (f->index != 0 || f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
f->flags = V4L2_FMT_FLAG_COMPRESSED;
strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32);
f->pixelformat = V4L2_PIX_FMT_MPEG;
return 0;
}
static int vidioc_g_fmt_vid_cap(struct file *file, void *private_data,
struct v4l2_format *f)
{
struct hdpvr_fh *fh = file->private_data;
struct hdpvr_device *dev = fh->dev;
struct hdpvr_video_info *vid_info;
if (!dev)
return -ENODEV;
vid_info = get_video_info(dev);
if (!vid_info)
return -EFAULT;
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
f->fmt.pix.width = vid_info->width;
f->fmt.pix.height = vid_info->height;
f->fmt.pix.sizeimage = dev->bulk_in_size;
f->fmt.pix.colorspace = 0;
f->fmt.pix.bytesperline = 0;
f->fmt.pix.field = V4L2_FIELD_ANY;
kfree(vid_info);
return 0;
}
static int vidioc_encoder_cmd(struct file *filp, void *priv,
struct v4l2_encoder_cmd *a)
{
struct hdpvr_fh *fh = filp->private_data;
struct hdpvr_device *dev = fh->dev;
int res;
mutex_lock(&dev->io_mutex);
memset(&a->raw, 0, sizeof(a->raw));
switch (a->cmd) {
case V4L2_ENC_CMD_START:
a->flags = 0;
res = hdpvr_start_streaming(dev);
break;
case V4L2_ENC_CMD_STOP:
res = hdpvr_stop_streaming(dev);
break;
default:
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"Unsupported encoder cmd %d\n", a->cmd);
res = -EINVAL;
}
mutex_unlock(&dev->io_mutex);
return res;
}
static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
struct v4l2_encoder_cmd *a)
{
switch (a->cmd) {
case V4L2_ENC_CMD_START:
case V4L2_ENC_CMD_STOP:
return 0;
default:
return -EINVAL;
}
}
static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_s_std = vidioc_s_std,
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
.vidioc_enumaudio = vidioc_enumaudio,
.vidioc_g_audio = vidioc_g_audio,
.vidioc_s_audio = vidioc_s_audio,
.vidioc_queryctrl = vidioc_queryctrl,
.vidioc_g_ctrl = vidioc_g_ctrl,
.vidioc_s_ctrl = vidioc_s_ctrl,
.vidioc_g_ext_ctrls = vidioc_g_ext_ctrls,
.vidioc_s_ext_ctrls = vidioc_s_ext_ctrls,
.vidioc_try_ext_ctrls = vidioc_try_ext_ctrls,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_encoder_cmd = vidioc_encoder_cmd,
.vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
};
static void hdpvr_device_release(struct video_device *vdev)
{
struct hdpvr_device *dev = video_get_drvdata(vdev);
hdpvr_delete(dev);
mutex_lock(&dev->io_mutex);
destroy_workqueue(dev->workqueue);
mutex_unlock(&dev->io_mutex);
v4l2_device_unregister(&dev->v4l2_dev);
/* deregister I2C adapter */
#if defined(CONFIG_I2C) || (CONFIG_I2C_MODULE)
mutex_lock(&dev->i2c_mutex);
i2c_del_adapter(&dev->i2c_adapter);
mutex_unlock(&dev->i2c_mutex);
#endif /* CONFIG_I2C */
kfree(dev->usbc_buf);
kfree(dev);
}
static const struct video_device hdpvr_video_template = {
/* .type = VFL_TYPE_GRABBER, */
/* .type2 = VID_TYPE_CAPTURE | VID_TYPE_MPEG_ENCODER, */
.fops = &hdpvr_fops,
.release = hdpvr_device_release,
.ioctl_ops = &hdpvr_ioctl_ops,
.tvnorms =
V4L2_STD_NTSC | V4L2_STD_SECAM | V4L2_STD_PAL_B |
V4L2_STD_PAL_G | V4L2_STD_PAL_H | V4L2_STD_PAL_I |
V4L2_STD_PAL_D | V4L2_STD_PAL_M | V4L2_STD_PAL_N |
V4L2_STD_PAL_60,
.current_norm = V4L2_STD_NTSC | V4L2_STD_PAL_M |
V4L2_STD_PAL_60,
};
int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
int devnum)
{
/* setup and register video device */
dev->video_dev = video_device_alloc();
if (!dev->video_dev) {
v4l2_err(&dev->v4l2_dev, "video_device_alloc() failed\n");
goto error;
}
*(dev->video_dev) = hdpvr_video_template;
strcpy(dev->video_dev->name, "Hauppauge HD PVR");
dev->video_dev->parent = parent;
video_set_drvdata(dev->video_dev, dev);
if (video_register_device(dev->video_dev, VFL_TYPE_GRABBER, devnum)) {
v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
goto error;
}
return 0;
error:
return -ENOMEM;
}